NDVI Calculation Input File ☒ 1。 Infor File:D:\RSI\IDL tioenwi40\data File 09:2.215 icrsters 。a。ctance 步骤2：选择要计算的文件 Spatial SubsetFull Scene OK Cancel Previous Open File.Open Spec Lib.Restore ROTs. NDVI Calculation Paraneters X Input File Type Landsat TM NDVI Bands:Red Landsat TH Landsat MSS AVHRR Output Result t SPOT AVIRIS Enter Output Filename Choose Compress Dutput Data Type Floating Point 步骤3：选择传感器类型 输入文件名，保程 oR】Queue Cancel 五、多光谱变换 l、K-L变换（主成分变换）：ENWI长条菜单栏Transform/principal components forward inverse compute sta. 五、多光谱变换 1、K-L 变换（主成分变换）：ENVI 长条菜单栏 Transform / principal components / forward inverse / compute sta